US 2385854 A
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Description (OCR text may contain errors)
Oct. 2, 1945.
J. J, WOLFERSPERGER GAS BURNER Filed Oct. 21. 1940 a I: v a fir mm n I m M b m 1 J k w m .w W
Patented on2, 1945 UNITED. STATES PATENT OFFICE 7 Gas human 7 John J. Wolfersperger, Webster Groves, Mo. Application October- 21, 1940, Serial No. 362,007 8 Claims. (01. 158-99) This invention relates to 8& n 11 0011119118- tion. p
It is well known that gas and fectly mixed, will burn with a flame propagation velocity of'approximately a thousand feet per second; and, as this high flame propagation velocity is not attained inconventional gas fired equipment, it is evident that gas can-be burned in much less space, in much shorter distance of travel, and in much less time than is now done in conventional gas fired equipment, ifthe. gas and combustio mixed.
An object of this invention is to ,provide a dependable and practical method and means for effecting rapid and complete mixing simultaneously with the combustion of the mixture and air, when perthereby to effect complete and perfect combus tion in so small a space and in such short distance of travel that mixing, combustion and heat transfer can be performed simultaneously in a passageway of relatively very small crosssectional area, such as a heat transfer coil in a water heater or steam generator, thus eliminating the necessity of providing special space for combustion as is equipment.
Other objects and advantages of the inven-' tion will appear from the following description, reference being made to the annexed drawing, in which.-- Y V Fig. 1 is a vertical sectional view of a boiler equipped with one form of my present invention. Fig. 2 is an enlarged side elevation of the fuel inlet device attached to the sharply curved por-.
tion constituting the inlet to the tortuous tube.
Fig. 3 is an enlarged horizontal sectional view approximately on the line 3-4 of Fig. 1.
Fig. 4 is a sectional view on the line 4-4 of Fig. 1, showing particularly the sharply curved inlet portion of the tortuous-tubular-Dassageway.
portion 3, gives high velocity to the ignited mixture passing therethrough. The sharply'curved portion I further develops a very high turbulence, and thereby produces almost instant and complete'mixture of air with the fuel. Asa result, perfect combustion is obtained within almost the theoretical ultimate air can be rapidly and perfectlynecessary in conventional space and in almost the theoretical ultimate minimum of distance of travel. i 4
The lower or outlet end of the tube 2 'isextended outwardly through ahole in the of the boiler and forms therewith aleakproof or hermetic Joint. A suction. device 4 is connected with the eflluent end of thextube 2 'by-a tubular,
the flue gases pass from said tube 2 tothe device 4 fitting 5 throughwhich for discharge through an outlet 8. A mercury switch I of conventional and known construction is attached to a rocking pivot.8 supported in an upward extension 9 of the fitting 5. A vane Ill attached to the pivot I extends partially across the inside of the fitting i. In its idle or unoperated position the vane i0 is approximately vertical and substantially closes the passage through the fitting 5. When the device [is operating, a suction is createdthereto through the fitting Iv and tube 2. This suction or flow ofair or flue gases swings the vane III toward the machine 4, thereby rocking the pivot 8 and moving the mercury switch 1 to close the circuit through the circuit wires ll. As shown inFig. l, the circuit is open; and, a y when the switch 1 is moved by flow of "air or flue gases caused by the machine ,the circuit through the wires H is closed, and the magnetic valve i2 in the fuel supply pipe [3 is opened.
This is because. the magnet I 4 for the valve I 2 is connected with the circuit II and is energized I to open said valve when the switch I is moved amount of air entering into the mixture of air 1 combustion mixture tube in cooperation with the cross-sectional area 1 of the tube. The sharply curved portion 3 or the tube does not 1 extend beyond the outer surface or the wall and'does'not obstruct ignited mixture into the tube. In this form of the invention,
I lar passage arranged to extending inwardly from said wallstoward the ate passage arranged and also to regulate the velocity of the and flue gases through the and gas,
straight extension of the the free induction or the the ignited mixture is given a high velocity into and through the tube, and a high turbulence and completion of mixture and compassing to the point of cross-sectional fuel gas conducted to the It is'now clear that the invention attains all of 7; its intended'objects and purposes eiliciently and 1 satisfactorily,- and can be varied without departure therefrom in other particulars than those specifically mentioned.
1. "A burner comprising walls forming an annureceive gas, wall portions axis of said annular passage and'providing a port.
of relatively small cross-sectional area for the dischargeof gas from. said passage, one of said wall portions havingan opening therethrough for the admission of air and the'other of said Well portions having a smaller opening. therethrough for the passage of saidair and gas from said burner, and a tube .having' hermetic connection with said last named wall portion around said opening therethrough for receiving said air and gas from said burner. I
2. A burner comprising walls forming an annu lar passage arrangedto receive gas, wall portions extending inwardly from said walls toward the axis of said annular passage and providing a port f of relatively small cross-sectional area for the discharge of gas from said passage, one of said wallportions having an opening therethroughior the admission of air and theother of said wall I portions having a smaller opening therethrough from said burner, a straight tube portion having hermetic for the passage of said air and gas connection with said last named wall portion around said opening for receiving said air and;
complete mixture gas from said burner, and a sharply curved connection with said tube eflecting of the air and gas passing therethrough.
3. A burner comprising walls forming an annular passage arranged toreceive gas and having an annular port opening toward the axis thereof, a flatr walll, extending inwardly from one edge of said port and toward the axis of said annular passage and having an opening for the discharge 01' gas and air therethrough, and a combustion tube having hermetic connection with said flat curved portion for effecting complete mixture of the air and gas passingtherethrough.
4. A burner comprising walls forming an arcu -l an arcuate port opening toward the axis thereof, a flatwall extending inwardly from one edge of said walled passage and toward the axis 0! said arcuate port and having an opening for the (113-,
wallaround said opening for receiving said air, and gas from'said burner andhaving a sharply to receive gas and having v cent and parallel annular wall portions extending inwardly from an annular port in said walls dis charging toward the axis of said annular passage and providing an annular outlet of relatively small cross-sectional area for the discharge of gas from said passage, one of said wall portions having an opening therethrough for the admission of air and the other of said wall portions having anppening therethrough forthe passage of said air and gas from said burner, and a combustion tube having an influent end in hermetic connection with said last named wall portion around said opening for receiving air and gas from said annular outlet, and having a sharply curved portion adjacent'to'said influent end near said connectionto effect complete'mixture of the air and gas passing therethrough.
6. A burner comprising walls forming an annular passage arranged'to receive gas, means forming an arcuate port for the discharge of gas from said passage, a wall portion extending inwardly from said walls'toward the axis of said annular passage and having a central opening therein for the passage of air 'and'gas from said burner, and a combustionitube having hermetic connection with said last named wall portion around'said central opening therethrough for receiving gas from said annular passage.
'7. A burner comprising walls forming an annularpassage arranged to receive gas, wall portions extending inwardly from said walls toward the axis, of said annular passage and providing a port of relatively small cross-sectional area for the discharge of gas from said passage, one of said wall portions having an" opening therethrough-for the admission of air and the other of said wallportions having a smaller opening therethrough for the passage of said gas emanating from said port and also for the passage oi-said air that is admitted through said first opening, a device adjacent to said burner for igniting said gas emanating from said port, and asuction device having discharge of gas from said passage, one ofsaid.
wall portions having an opening therethrough for the admission of air for mixture with said gas and the other of said wall portions having a smaller opening therethrough for the passage of a flame of ignition of said air and gas, and a suction device connected with the efliuent side 0i 1 has said smaller opening,
flame o! ignition of said air and gas through said smaller 7 said wall portion that for initiating and maintaining flow of a opening. n
JOHN J. WOLFERSPERGER.